我的Windows 7计算机上存在以下与bcrypt gem相关的错误。
$ rake db:drop db:create db:schema:load db:migrate db:fixtures:load
rake aborted!
LoadError: cannot load such file -- bcrypt_ext
C:/nital/office-data/integration-services-projects/Payments/customer-portal-project/customer-portal/config/application.rb:8:in `<top (required)>'
C:/nital/office-data/integration-services-projects/Payments/customer-portal-project/customer-portal/Rakefile:4:in `<top (required)>'
LoadError: cannot load such file -- 2.2/bcrypt_ext
C:/nital/office-data/integration-services-projects/Payments/customer-portal-project/customer-portal/config/application.rb:8:in `<top (required)>'
C:/nital/office-data/integration-services-projects/Payments/customer-portal-project/customer-portal/Rakefile:4:in `<top (required)>'
(See full trace by running task with --trace)
$ ruby -v
ruby 2.2.4p230 (2015-12-16 revision 53155) [i386-mingw32]
$ rails --version
Rails 4.2.6
$ rake --version
rake, version 11.1.2
的Gemfile
gem 'bcrypt-ruby', '3.1.2'
gem 'bcrypt', '3.1.8'
请指导。